Bug report（问题描述）

Steps to reproduce（问题复现步骤）

npm ERR! code 128
npm ERR! command failed
npm ERR! command git ls-remote ssh:// git@github.com /nhn/raphael.git
npm ERR! Host key verification failed.
npm ERR! fatal: Could not read from remote repository.
npm ERR!
npm ERR! Please make sure you have the correct access rights
npm ERR! and the repository exists.

Screenshot or Gif（截图或动态图）

Link to minimal reproduction（最小可在线还原demo）

Other relevant information（格外信息）

• Your OS:
• Node.js version:
• vue-element-admin version: